What is the difference between a subdirectory, subdomain, and ccTLD for a translated website?

For international SEO, a subdirectory with hreflang tags is usually the cleanest way to keep authority on one domain. Subdomains and country-code top-level domains split your domain authority and require more setup. Seatext AI uses localized subfolders with valid hreflang markup so Google can index translated pages. It also translates metadata, alt tags, and Open Graph cards for international search engines.